MEASURED, NOT GUESSED

Find curtains that fit the window.

Turn real window measurements into finished curtain width, panel width, drop, and rod length. Every assumption stays visible and adjustable.

in + cm live diagram no sign-up

CURTAIN SIZE CALCULATOR

What are you measuring?

Window width

Window height

Rod past each side

Rod above window

Fullness

Panels

72 in rod

Finished curtain width144 in total

72 in per panel × 2

Finished length90 in

Suggested rod72 in

Uses your 2× fullness and 6 in side extension. Floor length is an editable planning estimate; measure from the actual hanging point.

Open the detailed calculator

A PRACTICAL WINDOW WORKBENCH

Start with the number you need.

01Curtain fullnessCompare heading-specific ratios 02Fabric yardageInclude hems and pattern repeat 03Rod or pole lengthPlan extension and stack-back

Convention, not code. Curtain dimensions are commercial conventions and design recommendations—not universal standards. Measure the actual window and verify the selected product before ordering.

Method reviewed September 1, 2026